Type-writer lock.



M. M. BLUM.

TYPE WRETER LOCK.

APPLICANON FILED ma. 12, 1915.

1,174,304. Patented Mar. 7,1916.

MILTON M. BLUM, F BIRMINGHAM; ALABAMA.

TYPE-WRITER LOCK.

" Speeication of Letters Patent.

Patented Mar. 7, 1916.

Application led March 12, 1915. Serial No. 13,931.

T0 all whom 'it may concern Be it known that'I, MILTON M. BLUM, a citizen of the United States of America, residing at Birmingham, in the county of Jefferson and State of Alabama, have invented certain new and useful Improvements in Type-Writer Locks, of which the oliowing is a specification.

My invention relates to a novel means for providing typewriters with a permanent lock attachment by means of which the carriage of the keys or both may be locked at will so that the machine cannot be operated by an unlicensed party.

The chief object of my invention is to equip the machine with a simple and inexpensive lock attachment by means of which the operator can lock a machine to prevent it being tampered with or operated during his or er absence.

Another advantage of my invention is that in shipping the machines my lock will hold the carriage and practically all of the movable parts in position to prevent injury to them and to save the expense and troubie of tying the parts down as is now the general practice.

A further object of my invention is to adapt a single lock to simultaneously control the locking of both the carriage and the type bar levers, thereby locking all operating moving parts at a single operation and with a single key.

My invention further comprises the novel details of construction and arrangement of parts which in their preferred embodiment only are hereinafter more particularly described and illustrated by reference to the accompanying drawings which form a part of this specification, and in which Figure 1 is a side elevation of the forward end ofatypical typewriter with the frame broken away to illustrate the lock mechanism in front elevation. Fig. 2 isa vertical sectional view taken on the line v-- of Fig. l. Fig. 3 is an enlarged internal view taken on the line g/*y of Fig. 2,- and showing the rear wall of the lock casing broken away to illustrate the lock mechanism.

Similar reference numerals refer to similar parts throughout the drawings.

I have illustrated my invention as applied to a Remington type of machine but it will be understood that it can be modified within .55 the scope of my invention for application to any of the present standard types of machines which embody the depressible type bar levers and a movable carriage.

As illustrated, the typewriter frame comprises a bed plate 1, a top plate 2, and vertical posts 3, which connect the top and bed plates. The machine is provided with a pluraiity of type bar levers 4 of standard design which are hinged to the frame in the customary manner (not shown). On the top plate 2 I mountposts 5 which support the trans'- verse run way 6 which receives and guides the forward transverse member 7 of the transversely slidable carriage 8.

My lock mechanism in its preferred embodiment comprises a lock casing 9 preferably rectangular in form and provided with a side flange 10 adapted to be inserted behind and riveted to the inner flange 11 of one of the vertical posts 3, the bottom edge of the lock being supported on the upper edge of a side plate 1. This gives a rm and rigid mounting for the lock casing and disposes it at a point where it is concealed from view yet convenient for the operations contempiated to be performed by it. The lock illustrated is of the Yale lock type comprising a barrel 12 adapted to receive a` key 13. The cylinder of this barrel, which is of ordinary design and therefore not illustrated, has attached to it a disk 14 (Fig. 3) on the outer edge of which is a pin 15. This disk works in the .casing 9 and its pin engages in the curved slot 16 formed in a vertlcall movable sliding lock plate 17, which loc plate at one side is formed integrallywith or is rigidly connected to lock rods 18 and 19. These may be formed by one continuous rod or by integral extensions of the plate 17 or in any other suitable manner so long as the rods 18 and 19 are connected to the lock plate 17 for vertical movement therewith. The rods project through suitable openings provided in the top and bottom walls 'of the casing, the rod 18 extending vertically upward and through an opening 20 in the top plate 2. The transverse member 7 of the carriage is provided 'with a socket 21 in its under face 1n osition to receive the upper end of the ro 18 when the latter is in raised position. The rod 19 has provided at its lower end a transverse eye 22 which receives the out-turned end of a crank 23. The crank is carried by a rockin lock member for the type bar levers, whic member comprises a transverse rod 24 referably formed integral with the cran 23 and having mounted thereon a Wing plate 25. The rod 24 at its left hand end is pivoted in a suitable hole 26 formed in the left hand side 1 of the bed plate and its right hand end is journaled in a depending extension 27 of the lock casing 9.

It will be noted in Fig. 3 that the pin 15 is in its upper position and is in engagement with a shoulder 28 provided in one Wall of the slot 16. If the key 13 is turned to swing the pin to the left (Fig. 3), the pin will travel through the slot 16 and force the plate to its lowered position, carrying with it the lock rods 18 and 19 and holding them in lowered position.

As illustrated, the machine is locked, the lock plate 17 being set in raised position, the rod 1S being projected upwardly into the socket 21 so as to interlock with the carriage and prevent its movement, and the rod 19 being raised so that tbe pivotin movement imparted by it through cran 23 to the bar 524 will swing the Wing member 2) thereof into vertical position under the type bar levers, as seen in full lines in Fig. 3,

so as to lock them against operation. On the reverse movement of the lock the rod 18 is lowered to clear the carriage and the rod 19 depressed to swing the Wing member 25 to the dotted .osition shown 1n Fig. 3 in which the type ar levers are released for operation, This wing member can be cut away in any desired manner to provide for the manipulation of control parts While leaving its key lever engaging surface of uniform Widthg While the locking rods 18 and 19 are arranged to operate simultaneously, it will be obvious that l can use either or both in conjunction with the lock as conditions may require.

The carriage lock rod 1.8 can be bent or shaped in any suitable manner to take ad vantage ot any openings that may already exist in the top plate '3 and which will give access to any lock engaging part on the cai4` riage. lt will be understood that the type of locking,T mechanism that l have shown may be widely varied and that advantage may be teken in locking the type bar levers of any lock bar member which may already be provided on the machine and which is capable of operation by the lock member in substantially the manner described in con nection with the type ot bar lever look 25.

Having thus described my invention, what i claim as new and desire 'to secure by Letters Patent, isz- 1. The combination with a typewriter frame, a platen carriage and type bar levers, of a key controlled .lock permanently attached to the side of the frame, and two separate locking means actuated by said lock, one of said means being adapted to engage and lock the carriage against the frame and the other being adapted to engage and lock the type bar levers against operation.

2. The combination with a ty evvriter, of a platen carriage and type bar evers, of a key controlled lock permanently attached to the typewriter, a carriage engaging detent, a lever stop lock means, and means operable by the key controlled lock to move the datent and lever stop lock means into position to prevent operation of the carriage or type bar levers.

3. The combination with a typewriter having a carriage and type bar levers, ot a key controlled look permanently attached to the typewriter and comprising a key operated actuator', a carriage locking member, and a type bar lever locking means, said member and means being operably connected to said actuator.

l. A typewriter lock mechanism, comprising a key controlled look adapted to be permanently attached to the typewriter a carriage lock device, a type bar lever locking device, a key actuated member, and means to connect said devices to and actuate them by said key actuated member.

5. A typewriter lock mechanism compris ing a lock having a key actuated member, a typewriter carriage, and a device movable with said member and adapted to engage and interlock with said carriage to prevent its operation.

(i. A, typewriter frame, a movabie carriage having a bottom keeper, a top plate over which the carriage moves, and a key controlled lock attached to said frame below said top plate and having a bolt adapted to engage and interlock with said keeper, there being an opening in said top plate for the bolt to pass through, substantially as described.

7. The combination with a typewriter, of a transverse pivoted swinging bar disposed below the type bar levers, a lock pel-ma nently attached to the typewriter, a key actuated bolt which extends above and below the lock, a connection between said bolt and said bar to move the bar into the path ot' the type bar levers and lock them against operation, and a typewriter carriage having a keeper adapted to interlock with the bolt.

8. The combination with a typewriter and its carriage, frame, and type bar levers, of a lock permanently attached to said frame and having a bottom extension, a crank member disposed under said levers and journaled at one end in the frame and at its other end jonrnaled in said extension of the lock, a carriage locking bolt operable by said look,

and means to connect said crank member to said bolt, 'said member being movable by the bolt in its carriage locking position to prevent the operation of the type bar levers, substantially as described.

9. The combination with a typewriter having a movable carriage, a to plateover which said carriage moves an which has an opening therein under the carriage, a lock means permanently attached to the typewriter, and a verticall `movable lock pin operable by means o the lockand adapted to pass up through said opening in the top plate and interlock with the carriage to prevent its movement, substantially as described.

10. In a typewriter lock mechanism, a lock permanently attached to the typewriter and comprising a key operated rotary member, a pin movable with said member and eccentric thereto, a verticabmovable locking member having a curved slot in which sald pin engages, and means co-acting with said lock member to lock the carriage and type bar levers against operation.

1'1. The combination with a typewriter havin a key lock bail and type bar levers, of a (ey controlled lock permanently attached to the typewriter, a bolt rod actuated by the lock to move and lock Said key lock bail and prevent the manipulation of the typewriter keys.

12. A typewriter carriage key lock mechanism comprising a, lock casing adapted to be v permanently attached to a typewriter and a key actuated bolt member adapted to project in the path of and enga e a. part of the carriage to interlock it Wit the typewriter frame.

In testimon whereof I affix my signature in presence o two witnesses.

MILTON M. BLUM.

Witnesses:

NoMIE WELSH, R. D. JOHNSTON, Jr.

having a movable carriage, a to platevover which said carriage moves an which has an opening therein under the carriage, la lock means permanently attached to the typewriter, and a verticall .movable lock pin operable by means o the lock and adapted to pass up through said opening in the top plate and interlock with the carriage to prevent its movement, substantially as described.

10. In a typewriter lock mechanism, a lock permanently attached to the typewriter and comprising a key operated rotary member, a

eccentrlc thereto, a verticalrmovable locking member having a curved slot in. which sald pin engages,- and means (zo-acting with said lock member to lock the carriage and type bar levers against operation.

11. The combination with a ytypewriter [SEAL] Cl. la7-193.v

in movable with said member and` Signed and sealed this 2d dayiof May. 1916. l

having a key lock bail and type bar` levers, of 'a key controlled lock permanently attached to the typewriter, a bolt rod-actuated by the lock to'move land lock said key lock bail and prevent the manipulation of the typewriter keys..

12. A typewriter-carriage .key lock mechanism comprising alock casing adapted to be permanently attached to a typewriter and a key actuated .bolt member adapted to project in the path of and engage a part of the carriage to interlock it with the typewriter frame.

In testimon whereof I alix my signature in presence o two witnesses.

MILTON M. BLUM. Vitnesses NoMIE WELSH, R. D. JOHNSTON, Jr.

It 'is hereby certified-that in Letters PatentNo. 1,174,301, granted March 7 19.16, upon the application of Milton M'. Blum, of Birmingham, Alabama, foran improvement in"Type i- Writer Locks, an error appears in theprinted specification requiring correction as' follows yPage 1, linei12, for the word "of f read lor; Vand that the Vsaid Letters Patent j should be read with this-correction therein that the saine f may conform to the record of the case Patent I -R. F. WHITEHEAD,- Act'fr'zgl Commissioner of Patents.

Itis hereby certified that in Letters PatentNo. 1,174,304, granted March 7, 191.6,

upon the application of Milton M'. Blum, of Birmingham, Alabama, for an improvementin Type-Writer Looks," an error appears in the printed specification requircorrection as follows: Paige 1, line 12, for the word of read or; and that the seid 4Lettere Patent should be read with this-correction therein that the saine may coliform to the record of the case in the Patent Oce.

Signed and smiled this 2d day of May. AQ D., 1 916.

R. e. WH1THEAD,

Actzg Commissioner of Patents. C1. 1in-193. 

